Wrist watch strap buckle



Jan. 27, 1942. I Aio. SCHOENINGER WRIST WATCH STRAP BUCKLE Filed June 22, 1936 Patented Jan. 27, 1942 WRIST WATCH STRAP BUCKLE vAdolf 0. Schoeninger, Irvington, N. J .,assignor to Forstner Chain Corporation, a corporation of New Jersey Application June 22, 1936, SerialNo. 86,542

6 Claims.

My present invention relates to the jewelry art, and has particular reference to a novel construction for wrist watch straps.

It is the principal object of my invention to provide an adjustable strap which may be set for any desired length, to fit the wrist of the wearer.

It is a further object of my invention to utilize parts that are strong and sturdy, and that cannot become loose or broken with ordinary use.

It is an additional object of my invention to provide. parts which are readily manufactured of sheet stock, whereby ornamentation is facilitated, and manufacturing costs are reduced.

With the above and other objects and advantageous features in view, my invention consists of a novel arrangement of parts more fully disclosed in the detailed description following, in conjunction with the accompanying drawing, and more specifically defined in the claims appended thereto.

In the drawing,

Fig. 1 is a plan View of the novel strap;

Fig. 2 is an end elevation thereof;

Fig. 3 is a plan view, the parts being unlocked, and in extended position;

Fig. 4 is a perspective view of the length adjusting buckle;

Fig. 5 is a rear view of the snap element;

Fig. 6 is an enlarged view similar to Fig. 5, the parts being in section; and

Fig. '7 is an enlarged section on the line 11 of Fig. 1;

Fig. 8 is a perspective view of a modified adjustment buckle;

Fig. 9 is a view of the corresponding snap element; and

Fig. 10 is a section of Fig. 9 on the line IIII'0.

Referring to the drawing, the strap I0 includes a band II, having an end hook or connection I2 at one end and a slide 100p I3 at the other end, and a cooperating band I4 having an end hook or connection I5 at one end and a snap element I6 at its other end, the band I4 extending through the slide loop I3 and being retained therein on account of the greater width of the end hook I5 and the snap element. The bands are preferably made of metal mesh, but any flexible material may be used.

An adjustable buckle I1, see Fig. 4, is slidably mounted on the band II, and comprises a plate I8 having side edges I9, between which the band seats, the side edge I9 having a tongue 2| terminating in a pivot or swivel roll 22. A catch plate 23 isprovided, having a spaced bar 24 at one end pivotally seated in the roll 22, and a I catch slot 25 at the other end, releasably engageable with a spring roll 26 formed on a tongue 21, extending from the side edge 2|], wherebythe catch plate 23 may be snapped down to engage the slot 25 with the spring roll 26 and thus exert a tension on the tongues ZI and 21 to bind the side edges I9, 20 against the edges of the band II and lock the adjustment plate in selected position thereon.

The plate 23 has two parallel rolls 28, 29 formed integral therewith, which extend laterally across the band; the, snap element I6, see Figs. 5, 6, has sides 30, 3I, in which spaced spring pins 32, 33 are. mounted, as by swaging the ends, the pin 32 serving as ahinge pin for an end connector 34 attached to one end of the strap I4 and which has hinge eyes 35, 36, and carrying a central rotatable barrel 31, and the pin 33 having spaced end barrels 38 and a central rotatable barrel 39, whereby the barrels 31, 39 may be contacted with the rolls 28, 29, the pins 32, 33 being yieldable to permit the barrels to snap over the rolls to releasably lock the snap element to the adjustable buckle, as shown in Fig. 7. Although it is preferred to use two spring pins, one is sufficient; and in certain constructions, the pins may be formed rigid and the rolls formed to give for permitting the engagement and disengagement of the barrels.

The above described construction utilizes a base made of sheet metal, and a snap element of sheet metal, with spaced spring metal pins, the parts being readily manufactured and assembled, and ornamented in a pleasing and attractive manner. The use of spaced pins and spaced rolls permits a narrow construction for the cooperating parts, and the lock arrangement for the base permits a narrow width therefor, see Fig. 3, which results in an arcuate bending of the band of large radius, see Fig. 7.

A modified adjustable buckle and snap element arrangement are shown in Figs. 8 to 10, the adjustable buckle 40 including a plate 4I having side edges 42, 43 within which the band seats, the side edge 42 having a tongue 44a terminating in a pivot roll; a front catch plate 45 has a slot 46 at one end to provide an end bar 41 which is swivelled in the roll 44, and a slot 48 at the other end which is releasably engageable with a spring roll 49 formed'on a tongue 50 integral with the side edge 43, to releasably lock the adjustable buckle on a selected part of the band. Each side edge is provided with a catch detent such as a recess 5|; the snap element 52 has sides 53, 54 each having a latch projection 55, for snapping engagement with the cooperating recess 51. The snap element, like snap element I6, has a pin 56 serving as a hinge pin for a cam lock plate 51.

While I have described specific constructional embodiments or my invention, it is obvious that changes in the material used, and in the shape and relative size of the parts, may be made to suit the requirements for different designs, without departing from the spirit and the scope of the invention as defined in the appended claims.

I claim:

hinged to said pin, the. edges of the adjustable buckle and the snap element having detachably engageable catch and latch elements.

4. A separable clasp for an extension strap having two bands, comprising an adjustable buckle adapted to be slidably mounted on one band, and a snap element adapted to be secured to the second band, said snap element having a pivot pin and a releasable clamp connection hinged to said pin, the edges of the adjustable buckle and the snap element having detachably engageable catch and latch elements comprising detents on one element and cooperating projec- 1. A separable clasp for an extension strap having two bands, comprising an adjustable buckle adapted to be slidably mounted on one band, and a snap element adapted to be secured to the second band, said snap element having a pivot pin and a releasable clamp connection hinged to said pin, and a second pin, and said adjustable buckle having spaced catch parts releasably engageable by said pins. 7

2.,A separable clasp for an extension strap having two bands, comprising an adjustable buckle adapted to be slidably mounted on one band, and a snap element adapted to be secured to the secondband, said snap element having a pivot pin and a releasable clamp connection hinged to said pin and a second pin, and roller barrels on said pins, said adjustable buckle having spaced catch parts releasably engageable by said roller barrels.

3. A separable clasp for an extension strap having two bands, comprising an adjustable buckle adapted to be slidably mounted on one band, and a snap element adapted to be secured to the second band, said snap element having a pivot pin and a releasable clamp connection tions on the other element.

5. A separable clasp for an extension strap having two bands, comprising an adjustable buckle adapted to be slidably mounted on one band, and a snap element adapted to be secured to the second hand, said snap element having a pivot pin and a releasable clamp connection hinged to said pin, the edges of the adjustable buckle and the snap element having detachably engageable catch and latch elements, comprising detents on the adjustable buckle and cooperating projections on the snap element.

6.'A separable clasp for an extension strap having two bands, comprising an adjustable buckle adapted to be slidably mounted on one band, and a snap element adapted to be secured to the second band, said snap element having a pivot pin and a releasable clamp connection hinged to said pin, the edges of the adjustable buckle and the snap element having detachably engageable catch and latch elements comprising recesses on the adjustable buckle and cooperating snap projections on the snap element.

ADOLF' O. SCHOENINGER. 

